Wipers



1962 J. s. KAMBIORIAN 7 3,059,256

WIPERS Filed Dec. 19, 1960 2 Sheets-Sheet 1 I? I H i a :1 I. i I O /6 7" Q20 (D v 52 x1 o 42 a Q /5 E 46 4 l o 0 l INVENTOR.

JACOB S. KAMBQRIAN *XM 04mg" ATTORNEYS Oct. 23, 1962 J. s. KAMBORIAN 3,059,256

WIPERS Filed Dec. 19, 1960 2 Sheets-Sheet 2 INVENTOR. JACOB s. KAMBORIAN BY oLJTfGrwn ATTORNEYS Patented Oct. 23, 1962 3,059,256 WIPERS Jacob S. Kamborian, 133 Forest Ave., West Newton, Mass. Filed Dec. 19, 1960, Ser. No. 76,559 Claims. (Cl. 1212.4)

This invention relates to improved wipers for an end lasting machine such as that disclosed in Patent No. 2,668,967. In such machines, a shoe upper and insole are mounted on a last that is supported bottom-up on a vertically movable shoe support. End embracing toe wipers are movable horizontally across the bottom of the last to fold the lasting margin of the upper down against the insole, and during the wiper movement the shoe support is forced upwardly to exert a pressure between the wiper undersurfaces and the upwardly directed surfaces of the insole and lasting margin to iron the folded lasting margin. During the wiper movement, the shoe embracing surfaces of the wipers converge and surfaces located rearwardly thereof separate so that there is a gap therebetween that is positioned over the toe end of the last. As a result, the toe end of the lasting margin does not have a surface to bear against to iron the folded lasting margin. It therefore became necessary for the operator to repeat the movement of the wipers across the last and the upward prmsure of the shoe against the Wipers a number of times before the shoe was satisfactorily lasted.

The principal object of this invention is to overcome the aforesaid disadvantages. This is accomplished by providing a disc in one of said wipers that is seated in a complementa-l recess in the other wiper. The disc and recess intersect the surfaces on the wipers that separate during the forward movement of the wipers, and during this separation the disc bridges the gap between the wipers and provides a bearing surface cooperating with the lasting margin at the toe end of the last.

Other objects will become apparent from the following more detailed description of the invention and the appended claims. Reference is now made to the drawings wherein:

FIG. 1 is a side elevation, partially in section, of the machine;

FIG. 2 is a top plan view of part of the machine with the cover plate removed showing the wipers in their retracted position;

FIG. 3 is a plan view similar to FIG. 2, but to an enlarged scale, showing the wipers in an advanced position;

FIG. 4 is a bottom view of the wipers as they appear in their advanced position with'the outline of the last shown in phantom; I

FIG. 5 is a' bottom view of the wipers in a retracted position;

FIG. 6 is an exploded perspective view of the wipers;

FIG. 7 is a sectional elevation view of the last, upper, insole and Wipers; and

FIG. 8 is a top plan view of the wiper and shoe with the wipers intheir advanced position.

Referring to FIG. 1, the machine comprises a frame 18 carrying wipers ll), 12 supported on a wiper support 14 for sliding movement in a horizontal plane toward and away from a' shoe support 16 made substantially in accordance with the shoe support disclosed in Patent No. 2,668,967. The shoe support comprises a toe rest 20 and a heel pin 22 mounted on a carriage 24 for vertical movement toward and away from the plane of movement of the wipers. The piston 25 of a fluid actuated motor 26 is connected to the carriage to effect its vertical movement.

The wipers are mounted in wiper cams 28 having ca-m slots 30 and 32 extending therethrough. The wiper support 14 has upstanding pins 34 and 36 that fit in the slots 30 and 32. The wiper cams are pivotally connected by links 38 to a slide 40 that is slidably mounted on the wiper support. The slide is connected by linkage 42 to the piston 44 of a fluid actuated motor 46 to eifect horizontal movement of the slide 40. The slots 30 and 312 are constructed with the conventional contour to enable the wipers to be concomitantly translated towards the shoe mounted on the support '16 and to swing toward each other upon rightward movement of the slide.

Control linkage 48 is operatively connected to the motor 26 through valve 50 to effect the vertical movement of the piston 25 and carriage 2-4. The motors 26 and 46 are operated through a handle 52 in such a manner that horizontal movement of the handle causesa corresponding horizontal movement of the wipers, and rotation of the handle about its axis causes a corresponding vertical movement of the shoe support. Reference is made to Patent No. 2,888,693 for a more detailed disclosure of the mechanism for moving the wipers and shoe support in response to the manipulation of the handle 52.

If it is (found desirable, flexible shoe conforming means 54 similar to that disclosed in application Serial No. '50,- 177, filed August 17, 1960, in the names of Jacob S. Kamborian, Charles J. Dyer and Alan G. Baker, may be provided. The shoe conforming means includes a deformable yoke -56 (FIG. 2) positioned beneath the path of movement of the wipers and adapted to embrace the shoe and snugly conform the shoe upper to the shape of the last which is mounted on the shoe support during downward movement of the shoe support.

The wipers 10, 112, as illustrated in FIGS. 4, 5, 6 and 8 are thin plates, preferably made of steel having substantially fiat upper surfaces 58 and '60 and substantially flat undersurfaces 62 and 64. The surfaces 58, and 62, 64 are respectively located in common planes when the wipers are assembled in the machine. The wipers have divergent side surfaces 66 and 68 that are adaptedto embrace the end of a shoe and which meet at a point or vertex 70. Rearwardly of the vertex 70, the wipers have opposed side surfaces 72 and 74 that are in abutting relationship when the wipers are in their retracted position.

Semi-circular recess 76 and 78 intersecting the side surfaces 72, 74 are provided in the undersurfaces 62, 64 of the wipers 10, 12. When the wipers are in their retracted position, the two recesses form a complete circle. A bridging disc 80 is secured in the recess 78 by spot welding or any other appropriate means. The disc has a thickness substantially equal to the depth of the recess so that its undersurface lies in the same plane as' the undersurface 64 of the wiper L2, and has a radius substantially equal to the radii of the recesses so that the disc completely fills the recesses when the Wipers-are in their retracted position (FIG. 5).

In the operation of the machine, a last 82 (FIG. 7) having a shoe upper 84 and insole 86 assembled thereon is placed bottom up on the shoe support 16 with the toe of the last' resing on the toe rest 20 and the heel pin 22 V inserted in the conventional spindle hole in the last. The

support 16 is initially positioned so that the upwardly facing surface of the insole 86 is above the undersurfaces of the wipers. The shoe support is now lowered to a position where the upwardly facing surface of the insole is positioned below the undersurfaces of the wipers by an Adhesive may now be applied into the angle between the lasting margin and the insole to adhesively bond the lasting margin to the insole during the subsequent wiping operation. Alternatively, precemented uppers, having pressure sensitive adhesive thereon, which becomes activated under the pressures generated during wiping, may be used. It is also within the purview of the invention to secure the lasting margin to the insole by conventional fastening means such as tacks or staples after the wiping operation.

After the aforesaid downward movement of the shoe support, the motor 46 is operated to move the wipers forwardly and cause them to wipe or fold the lasting margin down against the insole. The slots 30 and 32 are so constructed that, during their forward movement, the wipers are concomitantly translated forwardly and swung toward each other approximately about the vertex 70 so that the surfaces 66 and 68 approach each other and the surfaces 72 and 74 move away from each other (FIG. 8). During this movement, the surfaces 66 and 68 move over the edge of the last to wipe or fold the lasting margin 88 of the upper 84 down against the insole 86. During the movement of the wipers over the insole, the motor 26 is operated to apply an upward force and thereby provide pressure between the insole and the wipers, and at the termination of the forward movement of the wipers, the pressure may be increased to iron or bed the lasting margin and to press down any wrinkles or flutes there may be in the lasting margin. The last is now lowered and the wipers retracted to their initial position.

When the opposed surfaces 72, 74 separate, the disc 80 moves away from the recess 76 and bridges the gap between the surfaces 72, 74 whereby the disc 80 operates to iron the lasting margin adjacent the end of the shoe during the forward movement of the wipers and when the increased upward pressure is applied at the end of the forward stroke of the wipers (see FIGS. 5 and 8). By providing the disc 80, the lasting margin is usually satisfactorily wiped in during a single forward movement of the wipers, whereas in the previously used wipers not having the disc 80, the wipers had to be moved forwardly over the last a number of times because the upper material below the gap between the surfaces 72, 74 would not be properly ironed during the first forward stroke of the wipers.

Upon occasion, the operator may inadvertently operate the motor 46 to retract the wipers prior to operating the mo tor 26 to lower the last. When this occurred in machines having the wipers not having the disc 80, the surfaces 72, 7.4 as they approached each other during the retractive movement tended to pinch the upper material and insole material located in the gap between the surfaces 72, 74 and tear or rip the material. By providing the disc 80, this danger is mitigated.

It should be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents that fall within the scope of the appended claims.

I claim:

1. In an end lasting machine that includes: a shoe support for supporting a last having a shoe upper and insole mounted thereon; a pair of symmetrically disposed wipers having forwardly divergent surfaces embracing an end of, the last and opposed surfaces located rearwardly of the divergent surfaces, said divergent and opposed surfaces meeting at a vertex on the line of symmetry of the wipers; and drive means operative to impart forward, substantially; planar, translatory, relative movement of the wipers with respect to the shoe support and to concomitantly swing-the divergent surfaces toward each other and the opposed; surfaces, away from each other about an axis that passes through said vertex and is substantially perpendicular to the plane of said relative forward movement to cause the divergent surfaces to fold the lasting margin of the upper against the insole; the improvement comprising: a bridging element on one of said wipersextending outwardly from its opposed surface toward the opposed surface of the other of said wipers.

2. In an end lasting machine that includes: a shoe support for supporting a last having a shoe upper and insole mounted thereon; a pair of symmetrically disposed wipers having fiat coplanar undersurfaces, forwardly divergent side surfaces embracing an end of the last and opposed side surfaces located rearwardly of the divergent surfaces, said divergent and opposed surfaces meeting at a vertex on the line of symmetry of the wipers; and drive means operative to impart forward, substantially planar, translatory, relative movement of the wipers with respect to the shoe support and to concomitantly swing the divergent surfaces toward each other and the opposed surfaces away from each other about an axis that passes through said vertex and is substantially perpendicular to the plane of said relative forward movement to cause the divergent surfaces to fold the lasting margin of the upper against the insole; the improvement comprising: a bridging element on one of said wipers extending outwardly from its opposed surface toward the opposed surface of the other of said wipers, the bridging element having a flat undersurface that is coplanar with the wiper undersurfaces.

3. In an end lasting machine that includes: a shoe support for supporting a last having a shoe upper and insole mounted thereon; a pair of symmetrically disposed wipers having forwardly divergent side surfaces embracing an end of the last and opposed side surfaces located rearwardly of the divergent surfaces, said divergent and opposed surfaces meeting at a vertex on the line of symmetry of the wipers, and drive means operative to impart forward, substantially planar, translatory, relative movement of the wipers with repect to the shoe support and to concomitantly swing the divergent surfaces toward each other and the opposed surfaces away from each other about an axis that passes through said vertex and is substantially perpendicular to the plane of said relative forward movement to cause the divergent surfaces to fold the lasting margin of the upper against the insole; the improvement comprising: a bridging element extending outwardly from the opposed surface of one of said wipers; and a recess in the undersurface of the other of said wipers intersecting its opposed surface and adapted to accommodate said bridging element.

4. In an end lasting machine that includes: a shoe support for supporting a last having a shoe upper and insole mounted thereon; a pair of symmetrically disposed wipers having flat coplanar undersurfaces, forwardly divergent side surfaces embracing an end of the last and opposed side surfaces located rearwardly of the divergent surfaces, said divergent and opposed surfaces meeting at a vertex on the line of symmetry of the wipers; and drive means operative to impart forward, substantially planar, translatory, relative movement of the wipers with respect to the shoe support and to concomitantly swing the divergent surfaces toward each other and the opposed surfaces away from each other about an axis that passes through said vertex and is subtantially perpendicular to the plane of said relative forward movement to cause the divergent surfaces to fold the lasting margin of the upper against the insole; the improvement comprising: a bridging element extending outwardly from the opposed surface of one of said wipers having a flat undersurface that is coplanar with the wiper undersurfaces; and a recess in the undersurface of the other of said wipers intersecting its opposed surface and adapted to accommodate said bridging element, said recess having a depth at least equal to the thickness of the bridging element.

5. The lasting machine according to claim 4, wherein the bridging element is a disc.

6. The lasting machine according to claim 5, wherein the recess has a curved wall whose radius of curvature is substantially equal to the radius of curvature of the disc.

7. In an end lasting machine, a pair of wiper blades having fiat bottom surfaces supported with their bottom surfaces in a common plane, said wiper blades having edges that have substantially coinciding apex portions and symmetrically disposed portions extending forwardly and rearwardly therefrom movable relative to each other by pivotal movement of the blades about an axis that passes through said apices and is ubstantially perpendicular to the plane of the bottom surfaces, the forwardly extending portions constituting wiping edges and the rearwardly extending portions providing clearance, and a bridge piece extending transversely from the rearwardly extending portion of one of said wiper blades an amount sufiicient to bridge the gap between the rearwardly extending portions of the blades in whatever angular positions the blades may be relative to each other and having a fiat bottom coinciding with the plane of the bottom surface of the blades.

8. In an end lasting machine, a pair of wiper blades according to claim 7, wherein the bridge piece underlaps the rearwardly extending portion of the other blade and the latter contains a recess in its undersurface along its 6 rcarwardly extending portion for receiving the underlapping portion of the bridge piece.

9. In an end lasting machine, a pair of wiper blades according to claim 7, wherein the transversely projecting portion of the bridge piece is semi-circular and its diameter extends along said rearwardly extending portion of said one blade.

10. In an end lasting machine, a pair of wiper blades according to claim 7, wherein the transversely projecting portion of the bridge piece is semi-circular and its diameter extends along said rearwardly extending portion of said one blade, and the other blade contains a semi-circular recess in its undersurface along its rearwardly extending portion for receiving said semi-circular bridge piece.

References Cited in the file of this patent UNITED STATES PATENTS 698,476 Eder Apr. 29, 1902 

